CLEAN ROOM CONSTRUCTION LIMITED
Get an alert when CLEAN ROOM CONSTRUCTION LIMITED files next
Leroy will email you the moment a new filing lands at Companies House — one short note per filing, nothing else.
Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2026-07-05 (in 2mo)
Last made up 2025-06-21
Watchouts
None on the register
Cash
£4M
-40.7% lowest in 3 filed years
Net assets
£4M
-27.9% lowest in 3 filed years
Employees
24
0% vs 2023
Profit before tax
£593K
-76.2% lowest in 3 filed years
Name history
Renamed 2 times since incorporation
- CLEAN ROOM CONSTRUCTION LIMITED 2006-12-19 → present
- CLEAN ROOM CONSTRUCTION (LONDON) LIMITED 1985-01-23 → 2006-12-19
- CRC AIR-CONDITIONING COMPANY LIMITED 1974-07-10 → 1985-01-23
Net assets
5-year trend · vs Industrials median
Accounts
5-year trend · latest reflected 2024-12-31
| Metric | Trend | 2022-01-01 | 2022-12-31 | 2023-01-01 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|---|
| Turnover | — | £16,995,146 | — | £10,933,939 | £5,566,890 | |
| Operating profit | — | £3,419,961 | — | £2,318,418 | £326,833 | |
| Profit before tax | — | £3,433,527 | — | £2,496,464 | £593,075 | |
| Net profit | — | £2,808,074 | — | £1,781,562 | £668,996 | |
| Cash | — | £6,611,988 | — | £6,760,963 | £4,008,808 | |
| Total assets less current liabilities | — | £4,984,819 | — | £5,279,881 | £3,851,377 | |
| Net assets | — | £4,818,219 | — | £5,113,281 | £3,684,777 | |
| Equity | £2,136,645 | £4,818,219 | £4,818,219 | £5,113,281 | £3,684,777 | |
| Average employees | — | 24 | — | 24 | 24 | |
| Wages | — | £3,073,678 | — | £2,314,575 | £1,344,306 |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2022-01-01 | 2022-12-31 | 2023-01-01 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|---|
| Operating margin | — | 20.1% | — | 21.2% | 5.9% | |
| Net margin | — | 16.5% | — | 16.3% | 12.0% | |
| Return on capital employed | — | 68.6% | — | 43.9% | 8.5% | |
| Current ratio | — | — | — | 2.01x | 1.93x | |
| Interest cover | — | — | — | — | 20.76x |
Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Standalone (parent only)
- Auditor
- Barnes Roffe LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate. Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
3 active · 6 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| ISTED, Ian Barry | Director | 2008-01-02 | Mar 1970 | British |
| LAWTON, Stephen Douglas | Director | — | Mar 1960 | British |
| ROWE, Richard Thomas | Director | 2008-01-02 | Jun 1968 | British |
Show 6 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| DAVIS, Malcolm Graham | Secretary | 1998-12-24 | 2005-12-31 |
| SIMPSON, Paul Francis | Secretary | — | 1998-12-24 |
| WEBB, Michael Edward | Secretary | 2006-01-02 | 2015-12-31 |
| DAVIS, Malcolm Graham | Director | — | 2008-07-01 |
| HARRIS, Richard James | Director | — | 1991-10-28 |
| SIMPSON, Paul Francis | Director | — | 1998-12-24 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Rowhill Wood Capital Limited | Corporate entity | Shares 75–100%, Voting 75–100% | 2019-12-31 | Active |
| Modereal Limited | Corporate entity | Shares 75–100% | 2016-04-06 | Ceased 2019-12-31 |
Filing timeline
Last 20 of 132 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2025-08-26 | AA | accounts | Accounts with accounts type full | |
| 2025-07-03 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-09-09 | AA | accounts | Accounts with accounts type full | |
| 2024-07-01 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-11-08 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2023-07-25 | AA | accounts | Accounts with accounts type full | |
| 2023-06-26 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2022-08-11 | AA | accounts | Accounts with accounts type small | |
| 2022-07-04 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2021-07-28 | AA | accounts | Accounts with accounts type small | |
| 2021-07-05 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2020-07-27 | AA | accounts | Accounts with accounts type small | |
| 2020-07-02 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2020-01-31 | SH06 | capital | Capital cancellation shares | |
| 2020-01-31 | SH03 | capital | Capital return purchase own shares | |
| 2020-01-27 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2020-01-27 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2019-07-11 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2019-07-11 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2019-07-11 | MR04 | mortgage | Mortgage satisfy charge full |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 2
- Capital events
- 0
- Officers appointed
- 0
- Officers resigned
- 0
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
-49.1%
£10,933,939 £5,566,890
lowest in 3 filed years
-
Cash
-40.7%
£6,760,963 £4,008,808
lowest in 3 filed years
-
Net assets
-27.9%
£5,113,281 £3,684,777
lowest in 3 filed years
-
Employees
0%
24 24
-
Operating profit
-85.9%
£2,318,418 £326,833
lowest in 3 filed years
-
Profit before tax
-76.2%
£2,496,464 £593,075
lowest in 3 filed years
-
Wages
-41.9%
£2,314,575 £1,344,306
lowest in 3 filed years
Each % is (latest − prior) ÷ |prior| for the line item as filed. Periods don't have to be exactly 12 months apart — a long or short period (typical around incorporation or year-end changes) will distort the comparison. Lines a company doesn't report are omitted. About these numbers